English
scratch-proof
From scratch + -proof.
Today it means
adj Unable to be scratched.
Sources
Sources: Wiktionary, “scratch-proof”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / scratch-proof